{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "52888923",
    "entityType": "User",
    "nonce": "0x00a57a55c6250eda80a8fff33de6b4e5b31b322dbb16e2b8104e7580c6d08053",
    "signature": "0xf8c47667470470c71b40a1968b43a004f163f427abd535129d6872d81877d6cd784cb1d358f0534a7ba4a250fa0c6338daae2755d0c6697c61fdf3ad249ad7091c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}